Bobob-lambert-spyb Lambert was an undercover cop in who spent years infiltrating Greenpeace and other protest groups in London. He has previously been exposed for bombing a department store in the name of the Animal Liberation Front, and is also under investigation for sexual relationships he had with four women while undercover.

Now Paul Lewis and Rob Evans at The Guardian have reported that Lambert, while undercover, co-wrote the infamous leaflet about McDonald’s that led to the “McLibel” trial, the longest court case in English history: